Atlas N U33/36B Locomotives

The horsepower race was in full swing by the late 1960s when GE introduced the 3,300hp, four-axle U33B locomotive. 137 units were produced between September 1967 and August 1970 when production ended. GE upped the horsepower ante in 1970 with the introduction of the 3,600hp U36B which was produced between May 1970 and December 1974. Both models were externally identical, and internally they were both powered by the same GE FDL-16 cylinder four-stroke engine. The horsepower increase was achieved through adjustments to the fuel rack settings and other internal component changes. One key spotting feature of both models was the built-out radiator “wings” on the long hood.

Atlas’ U33B and U36B model is being offered in both an early and late phase. The early phase model includes flushmounted radiator screens and air intake screens on the long hood. In addition, there is a built-out area on the top of the front and rear pilots. Late phase models include corrugated radiator and air intake screens, with a flat pilot face. An optional separate electrical equipment box is included on the left side walkway behind the cab per the prototype. AAR-B or Blomberg trucks are used when appropriate.

Features:

  • All New Tooling
  • Factory-installed AccuMate® magnetic knuckle couplers
  • Blackened metal wheels
  • Scale Speed™ motor
  • Accurate painting and lettering
  • Optional separate electrical equipment box will be included on the left side walkway behind the cab
  • per the prototype
  • AAR-B or Blomberg trucks will be used when appropriate
  • Atlas Master® Silver version is Sound Ready and equipped with speaker for easy conversion to DCC sound

SILVER SOUND READY FEATURES (SILVER LOCMOTIVES ONLY):

  • Sound ready & equipped with speaker for easy conversion to DCC sound.
  • EC24 DCC Plug Equipped

DCC OPERATION FEATURES (GOLD LOCOMOTIVES ONLY):

  • Supports all DCC-programming modes
  • DCC includes RailCom and RailComPlus, with 14, 28 or 128 speed steps and with 2-digit and 4-digit addressing.
  • Flexible mapping of function keys F0 to F28.
  • A total of 6 DCC function outputs are available, and all can be function mapped (disable, brightness, light effects) individually
  • Follows all NMRA DCC standards and recommended practices.

SOUND FUNCTIONALITY FEATURES (GOLD LOCOMOTIVES ONLY):

  • Over 20 sound effects are available, including engine start-up and
    shutdown, prime mover sounds through all eight notches, bell, air horn, air compressor, dynamic brakes and more.
  • There are up to 16 user-selectable horns, 2 user-selectable bells, and 2 user-selectable synchronized brake squeals.
  • Equipped with ESU’s Exclusive “Full Throttle” features for ultimate realism in prototype running.

AccuMate® couplers are made under license from AccuRail, Inc.

Check availability of this product on the Atlas Online Store

Silver Item# Road Name Road Number Gold Item#
July 2026
Silver MSRP: $159.95 Gold MSRP: $279.95
N U33B Locomotives - New Paint Schemes!
40 006 485 Conrail (Blue/White) 2896 40 006 499
40 006 486 Conrail (Blue/White) 2910 40 006 500
40 006 487 Conrail (Blue/White) 2932 40 006 501
N U33B Locomotives - New Road Numbers!
40 006 488 Reading & Northern (Green/Yellow) 3300 40 006 502
40 006 489 Reading & Northern (Green/Yellow) 3303 40 006 503
N U33B Locomotives - New Paint Schemes!
40 006 490 Rock Island (Blue/White) 195 40 006 504
40 006 491 Rock Island (Blue/White) 196 40 006 505
40 006 492 Rock Island (Blue/White) 298 40 006 506
40 006 493 Guilford (B&M) (Gray/Orange) 190 40 006 507
40 006 494 Guilford (B&M) (Gray/Orange) 192 40 006 508
N U36B Locomotives - New Paint Schemes!
40 006 495 CSX* YN2 (Blue/Gray/Yellow) 5723 40 006 509
40 006 496 CSX* YN2 (Blue/Gray/Yellow) 5764 40 006 510
40 006 497 CSX* (MCVX Safety Train) (Blue/Yellow) 7764 40 006 511
N U33B Locomotive - Limited Edition Collectors Series
40 006 498 D&H (ex-Conrail) (Blue/White) 2924 40 006 512
*CSX Licensed Product
May 2024
Silver MSRP: $159.95 Gold MSRP: $274.95
N U33B Locomotives - New Model!
40 005 940 Penn Central (Black/White) 2916 40 005 925
40 005 941 Penn Central (Black/White) 2921 40 005 926
40 005 942 Penn Central (Black/White) 2937 40 005 927
40 005 943 Reading & Northern (Green/Yellow) 3301 40 005 928
40 005 944 Reading & Northern (Green/Yellow) 3304 40 005 929
40 005 945 Rock Island (Maroon/Yellow/White) 193 40 005 930
40 005 946 Rock Island (Maroon/Yellow/White) 197 40 005 931
40 005 947 Rock Island (Maroon/Yellow/White) 198 40 005 932
N U36B Locomotives - New Model!
40 005 948 Auto Train (White/Red/Purple) 4000 40 005 933
40 005 949 Auto Train (White/Red/Purple) 4006 40 005 934
40 005 950 Auto Train (White/Red/Purple) 4010 40 005 935
40 005 951 Seaboard Coast Line (Black/Yellow) 1778 40 005 936
40 005 952 Seaboard Coast Line (Black/Yellow) 1799 40 005 937
40 005 953 Seaboard Coast Line (Black/Yellow) 1816 40 005 938
40 005 954 Seaboard Coast Line (Bicentennial) (Red/White/Blue) 1776 40 005 939